What is a coefficient in physical science?

Answer 1

a coefficent in physical science means:a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product that are involved in a reaction

Answer 2

Let's take a very simple chemical equation, the combination of hydrogen and oxygen to create water.

The equation for this is as follows:

2H2 + O2 -> 2H2O

In english, 2 molecules of hydrogen + 1 molecule of oxygen yields (->) 2 molecules of water.

The coefficient is the number 2 in front of the hydrogen molecule H2

In chemistry, the coefficient tells us "how many" of each molecule we're dealing with.